From: Boqun Feng <boqun.feng@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
"Danilo Krummrich" <dakr@kernel.org>,
"Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <lossin@kernel.org>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Trevor Gross" <tmgross@umich.edu>,
"Will Deacon" <will@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Matthew Maurer" <mmaurer@google.com>
Subject: Re: [PATCH 0/3] Remove the usage of Rust native atomics in debugfs
Date: Wed, 22 Oct 2025 09:19:55 -0400 [thread overview]
Message-ID: <aPjZ-yA4ihZqlNwb@tardis-2.local> (raw)
In-Reply-To: <20251022080717.GI4067720@noisy.programming.kicks-ass.net>
On Wed, Oct 22, 2025 at 10:07:17AM +0200, Peter Zijlstra wrote:
> On Tue, Oct 21, 2025 at 11:53:21PM -0400, Boqun Feng wrote:
> > Rust native atomics are not supposed to be used in kernel due to the
> > mismatch of memory model, since we now have the LKMM atomics in Rust,
> > remove the usage of Rust native atomics in debugfs.
>
> Doesn't rust have a language feature that allows you to blacklist them;
> ensuring they are not used?
>
Although I don't know whether it's available today, but I believe that
can be done (in the future probably?).
However, this patchset is about cleaning up the existing usage, which
was introduced before we have LKMM atomics on the Rust side.
Regards,
Boqun
>
next prev parent reply other threads:[~2025-10-22 13:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-22 3:53 Boqun Feng
2025-10-22 3:53 ` [PATCH 1/3] rust: sync: atomic: Make Atomic*Ops pub(crate) Boqun Feng
2025-11-14 15:33 ` [tip: locking/core] " tip-bot2 for Boqun Feng
2025-10-22 3:53 ` [PATCH 2/3] rust: sync: atomic: Implement Debug for Atomic<Debug> Boqun Feng
2025-11-14 15:33 ` [tip: locking/core] " tip-bot2 for Boqun Feng
2025-10-22 3:53 ` [PATCH 3/3] rust: debugfs: Replace the usage of Rust native atomics Boqun Feng
2025-10-22 9:52 ` Danilo Krummrich
2025-10-22 16:25 ` Matthew Maurer
2025-11-14 15:33 ` [tip: locking/core] " tip-bot2 for Boqun Feng
2025-10-22 8:07 ` [PATCH 0/3] Remove the usage of Rust native atomics in debugfs Peter Zijlstra
2025-10-22 8:27 ` Alice Ryhl
2025-10-22 13:19 ` Boqun Feng [this message]
2025-10-22 10:29 ` Greg Kroah-Hartman
2025-10-24 5:49 ` David Gow
2025-10-24 14:57 ` Danilo Krummrich
2025-11-05 20:01 ` Boqun Feng
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